Vehicle



(No Model.)

S. P. BURDIOK.

VEHICLE.

No. 417,143. Patented Dec. 10, 1889..

N. PKTERQ. Plmu-Llllw n her, Washington, I! c.

UNiTED STATES PATENT GFFICE,

STEPHEN P. BURDICK, OF OAKLAND, CALIFORNIA.

VEHICLE.

SPECIFICATION forming part of Letters Patent No. 417,143, dated December 10, 1889.

' Application filed April 13, 1889. Serial No, 307,105. (No model.)

To all whom it may concern:

Be it known that I, STEPHEN PowELL BUR- DICK, a citizen of the United States, and a resident of Oakland, in the county of Alameda and State of California, haveinvented certain new and useful Improvements in Vehicle- Springs; and I do declare the following tobe a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being bad to the ac companying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

Figure 1 of the drawings is a representation of this invention and is a bottom view. Fig. 2 is a detail. Fig. 3is a vertical section taken through a portion of a cart, with one spring. A

This invention has relation to vehicle springs; and it consists in the construction and novel combination of parts, as hereinafter set forth. y

In the accompanying drawings, the letter Z designates the bottom of the body of a vehiole, to which are secured the lateral transverse spiral springs A, each spring-being axially extended at its ends to form journals a a, which are seated in bearings E, secured to the bottom of the vehicle, or preferably to cleats thereof, as indicated.

The inner journal of each spring is extended to form the reversely-bent attachment-arm C, which is provided with a flattened end 0, nearly at right angles to said arm C, and perforated for the securing-bolts 0, whereby the arm is fastened to the body of the vehicle. This reversely-bent arm 0 extends along the entire length of the springbody portion back to the edge of the body, where it is secured thereto.

The outer journal of each spring is extended and bent, at Z), to form the oblique lever-arm B, the end of which is pivoted to a hanger F, secured to the gear-bar or side bar M. The leverarm is pivoted directly to the head f of the hanger, and said head is turned obliquely inward, so that its inclination will correspond with that of said lever-arm.

In order to provide room for the upper portions of the spiral springs, the cleats O of the body are secured as indicated at o.

ends h of the bolts H, said bent upper ends I engaging the grooved holders 6'.

The lever-arm B extends obliquely downward, outward, and forward, as shown, and as the reversely-bent attachin ent-arrn C is also bent around forward of the coil portion of the spring it is apparent that the weight of the load tends to close the spring. The spring consists of the lever-arm, the spiral body, and the attachment-arm, and it has not only the spiral action, but the torsional eifect of the reversed attachment-arm. It will also be apparent that the working points or points of pressure on the body are at its outer edge or sill as the bent end of the attachment-arm .is in line with said edge, as is also the outer bearing of the spring. In this combination it will be observed that it is designed to extend the lever-arms of the forward and of the rear springs forward and obliquely downward, so that they will have uniform parallel motion; and when these springs are applied to carts it is apparent that the load at each downward movement thereof is shifted a little backward, so that the horse is in a measure relieved during the downward movements.

The parallel arrangement of the springs renders it an easy matter to add or remove a pair of springs, according to the Weight of the load. hen the Wagon is designed to carry loads of various weights, it is provided with extra bearings and hangers and with extra springs, which can be quickly removed when a light load is to be carried, and when the load is heavy readily replaced,

Between the inner bearings E of the lateral springs is usually located a bearing-block P.

Having described this invention, what I claim, and desire to secure by Letters Patent, 1s

1. The vehicle spring consisting of the transverse spiral body portion, the outer journal-extension of said body portion bent downward and forward and outward, forming an oblique lever-arm, the inner journ al-extension, and the reversely-bent attachment-arm extending therefrom along the entire length of the spiral body portion, and also forward in the same general direction as the said leward, outward, and forward to each other and ver-arm, and having the flattened bent end pivoted directly to the oblique heads of the provided with fastenirig-perforations, subhangers of the gear-bars, said reversely-bent 15 stantially as specified. attachment-arms and lever-arms extending 5 2. The combination, with the vehicle-body forward in the same general direction, subhaving the bearings E and the side gear-bars, stantially as specified. of the front and rear spiral springs laterally In testimony \vhereofI affix my signature in arranged in pairs, as shown, and having the presence of two Witnesses.

reversely-bent attachment-arms secured. to STEPHEN P. BURDICK. 10 the outer edges of the body, and the oblique I \Vitnesses:

lever-arms passing through bearings at the WILLIAM J. DINGEE,

outer edges of the body and extending down-. G. VINZENT. 

